Flora of North America species comparison

(5–)8–15(–30) per areole or spineless to nearly spineless, usually at most areoles, not obscuring stems, spreading, straight or slightly curved, silver to yellow to usually ± red or tan to brown, stout, terete or sometimes flattened basally, 8–30(–40) mm subequal;

sheaths silver to yellow to usually tan to dirty white, yellow tipped.

(0–)1–4 per areole, in all but proximal areoles of stem segment, usually all deflexed, yellow with whitish to pinkish basal coating, moderately stout to acicular, the longest 1.5–2.8 cm;

sheaths whitish at bases to golden at tips.

in dense adaxial tuft, pale yellow, 0.5–3 mm.

in adaxial tuft and marginal about areole, yellow, 1–3 mm.

inner tepals dark pink to magenta to red-magenta, obovate, apiculate, 15–35 mm;

filaments green basally to pink to magenta distally;

anthers yellow;

style light green basally or pink to red-magenta apically;

stigma lobes green or cream.

inner tepals greenish bronze or red to magenta, spatulate- to obovate-apiculate, 10–15 mm;

filaments reddish;

anthers light yellow;

color of style and stigma lobes unknown.

not proliferating, yellow, obovoid, 24–45 × 20–40 mm, fleshy, tuberculate, spineless;

areoles 18–30;

tubercles nearly equal in length or longer in proximal portion of fruit, prominent (occasionally smooth at maturity);

umbilicus 7–14 mm deep.

commonly sterile, often proliferating, green, becoming yellow with red blush to red, obconic to obovate-stipitate, 15–23 × 10–20 mm, fleshy, moderately tuberculate;

umbilicus deep, 3–4.5 mm;

areoles 10–18, a few producing 1(–2) short spines.

yellow-tan, subcircular to angled, warped, 2.5–4 mm diam., sides smooth to slightly lumpy;

girdle usually narrow, not protruding.

tan, angularly subcircular to broadly oval, warped, 3–4 × 3–3.5 mm;

girdle broad, lumpy, little protruding.

= 22.